Remove stale references to make.ps1 libs command (#53)

PR #38 removed the make.ps1 libs command but left dangling references
in README.md's Windows install section and corral.json's
post_fetch_or_update hook.

Closes #51
Closes #37

Author: SeanTAllen

README.md

@@ -99,9 +99,7 @@ sudo zypper install libopenssl-devel
 
 ### Installing on Windows
 
-If you use [Corral](https://github.com/ponylang/corral) to include this package as dependency of a project, Corral will download and build LibreSSL for you the first time you run `corral fetch`.  Otherwise, before using this package, you must run `.\make.ps1 libs` in its base directory to download and build LibreSSL for Windows. In both cases, you will need CMake (3.15 or higher) and 7Zip (`7z.exe`) in your `PATH`; and Visual Studio 2017 or later (or the Visual C++ Build Tools 2017 or later) installed in your system.
-
-You should pass `--define libressl` to Ponyc when using this package on Windows.
+Install one of the supported SSL libraries.
 
 ## API Documentation
 

corral.json

@@ -12,10 +12,5 @@
     "documentation_url": "https://ponylang.github.io/ssl",
     "version": "2.1.0",
     "name": "ssl"
-  },
-  "scripts": {
-    "windows": {
-      "post_fetch_or_update": "PowerShell.exe -File make.ps1 -Config release -Command libs"
-    }
   }
 }